Boat stern and propeller assembly



Sept. 7. 1943. H, R XI UE 2,328,939

BOAT STERN AND PROPELLER ASSEMBLY Filed Oct, 21, 1942 2 Sheets-Sheet l 1 JYVENTOR, li'zppoZy lefi. zyaas ATTDR NEYS Sept.- 7, 1943. H. R. XIQUES 2,328,939

BOAT STERN AND PROPELLER A S SEMBLY Filed 001;. 21, 1942 2 Sheets-Sheet 2 1? w z l 'm fgzi ATTCI RN EYS with y invention.

My invention relates to small beatsxand has among its objects and. advantages. theprovisionj of an improvedstern constructionsand propeller l assembly so designed as to facilitatetplacement of the propeller assembly'and the motor. while the l In the accompanying drawings: Figure 1 is a top view assembly... 1. Y I gure 3 is an Figure 2 is a perspective view of. the propeller 5 l l l manner-as'to bring the engine driven shaftf'lflin coaxial alignment with the propeller shaft34.

\ Figure 4: is. a horizontal sectional; view. of 1 the r stern structure illustrating the-manner in which the propeller; assemblyis-firstwplaced in position C preparatorytoplacement of the motor,and -;fl

- UNITED f STATiE-S' H 1 I 1 Y 2 2 9 u sonseem en ments eap yt ejx us; New onax ,m.j .aptnaetad ttat'1;l lasmamlens r (Clglh j v s I l I r that 14,;fagaa 44 aidyt' e clamps 4s, r late 3L enlarged sectional View of: the

stemstructuren l of a boat'lin accordance chored inside the boat and forwardly of'the ribs 52. This frame includes "hooks 62 engageable. over the base flange 54fof the motor. Twoscrews sears threaded .thr'oug'lf an angle 58 of the frame rorengagement withthe motorto holdthelatter in firm conniectiorfiwith the hooks '62. Figure3 illustrates the frame 60 as being inclined insuch 1A sleevelcouplingi .12 is :splined on thepropeller 2O with the exception of the stern structure I2, An

opening I4 is provided in the stern structure for accommodation of the propeller l6.

wherein a frame is bolted at 22 to an end wall or heavy plank 24 of T-shaped contour. .A dethrough an opening 36 in the plank 24 and through a collar 38 clam'pedagainstthe opposite I face of the plank 24 by-the bolts 32. .,A flange 40 is formed on the propeller shaft 34 and coacts' with the propeller l6 to restrain the shaft from relative longitudinal movement.

In Figure 4, the boat bottom 4| andthe and parallel walls 42 of the opening l4 are respectivelyprovided-with one horizontal and two vertical ribs 44 against which the plank 24-is tween the plankand the three ribs. Each wall is provided with two clamps 48 arranged to press the plank 24 into holding engagement with the ribs 44.

spaced Figure 2 illustrates a propeller assembly .18

I Figure 4 tothat of Figure3 for operatively connecting the propeller shaft with the engine.

a clamped. A sealing gasket 46 isinterpos'ed be- In Figure 4, two 'vertical and one horizontal ribs 52 are respectivelyattached to the walls 42 forwardly of the ribs 44 and across the bottom 4|. A T-shaped plank 54 is provided for coacclamps" 48.

amount of water in thespace between the planks:

.. shaft. '34: The adjacent end. of the motor .shaft 10 isalso;grooved sothat :th coupling may be shifted'tocthe position of Figure 3 tofixedly res lateqthedpropeller shaft'withuthe; motor shaft.

Setsscrews :141are threaded throughfthe coupling l2 fprlrespective, engagement with the. propeller shaftfandrthe engine vdrivenzshaft. t

In a case where the boat is on the bank of a stream/the plank 54 is securely clampedxin the position of Figure 4, to provide a watertight closure. 'fIhe boat may then be placed in the water preparatory to placement of the propeller assembly. The propeller assembly is thenplaced in'position and made secure by tightening the At this time there will be a small 24 and 54. This water may be removed with a pump or allowed to flowlinto the boat, since :the plank 54 is removed assoon as the propeller, assemblyis made secure.

placed in position and made secure,.after which.

the coupIingI-H is shifted from its position of A skeg "IBunderliesthe propeller l5 and has one"end secured to the plank 24 and its other. end arranged to support the lower end of a rud-I 'der shaft 18 to which the rudder is connected. The shaft 18 extends through an opening 82 in 1 the frame ,20 and is provided witha tiller 84 to l which; a tiller rope 85 is connected. The stem construction issuch as to facilitate placement and removal ofthe propeller assembly. This may be. done While the boat is in the wateri The propeller assembly I8is such that the entire complement of. propeller, shaft,'rudder and skeg are easily handled and at the same 7 time performing efficient service in operating the tion with the ribs 52. .This plank is pressed againstthe ribs 52 by clamps 56attached to the walls 42. Thelribs 52, the temporary wall or plank s4 and the clamps as are identical with the boat. The motor base. permits quick installation of .the motor regardless the limitations of the boat.

The engine 58isthen r of it size within The power developed by the motor is directly transmitted to the propeller shaft, thereby elim- I hull.

inating the use of gears. The propeller assembly may be removed for inspection or repair without requiring beaching or lifting of the boat out of the water. A four cycle engine can be used, thus giving better performance than a two cycle engine, especially with respecteto starting. The

; motor is located inside the boat and may be'protected while in operation by a proper cover.

There is no vibration transmitted to the tiller,

, thus making long trips le'ss tiresome to the opera-r tor. The invention is constructed of light weight materials and in several parts so as to beeasily transported and handled by one person. Through standardization of the attaching parts, difieren't used;

gagement'with the frame 26 and is hingedly con- I nected at one end with the hull of the' boatpa's at 99; and its ether end is bolted at92 t6 the the propeller assembly alone V 7 With ut further e1alteration, (the froregeing will so fully explain invention, that" others t e water is tr 'fismitteetefthe ne'li instee'dtf a by I a l e -l r nt-" arma.. iiediiy adapt the same for use under various conditions of service, 1 e

Iclaim: 1 i r 1. In a boat, the oombination'of a-stern'having an opening} a first wall for temporarily clos' ingsaid'opening, a propeller assembly having a propeller'shaft and a second'wall constituting a closure for said opening, means'for, securing said propeller assembly to the stern, a motorih'aving a driven shaft for coaxial'ali'gnment with the pro peller shaft when said first wall removed, and

Abarf88 extends across the framei din en-'- boats, motors and propeller assemblies, can be r any shock a s d j e s eieejee m btwen e 6 ans abet-recedes in,

means for connecting the propeller shaft with the driven shaft.

2. The invention described in claim 1 wherein said last mentioned means comprises a coupling 1 having splined connection with the propeller .shaft and the driven shaft.

3. The invention described in claim 1 wherein clamp means are provided for detachably connecting said first wall to the stern and in which said first mentioned means include clamps for detachably connecting the second'wa'll with the stern.

second wall to said second ribs.

5. The invention described in claim 1 wherein saidpropeller assembly includes "a skeg and a ruddermeans; t l, r TGxThe invention describedin olaimv 1 wherein saidrprcpeller'slia'ft declines rearwardly of said stern, and an inclined motor base in said stern for supporting the motor at .anangl'e .tovbring said driven shaft inicoaxial alignment with said propeller shaft;

7., The invention described in claim 1 wherein said propeller assembly includes a sliaftlog for the propeller shaft fixedly secured to said second wall;-

8. The invention described in claim l'Wh erein said stern ineludes'a'bottom'iunderlying said-first and second walls.

9. The invention described in claim wherein a shock bar is fixed to said stern and liejs in-engagement with the propeller assembly to transmit "shocks to the stern. 4o

HIPPOLYTE ,R. mamas. 

